Math Flashcards
What is a composite number?
A number greater than 1 that is not a prime number.
What is a rational number?
A number that can be expressed as a fraction.
What is an irrational number?
A number that cannot be expressed as a fraction, like pi or the square root of x.
A negative number raised to an even power is always positive or negative?
Positive
A negative number raised to an odd power is always positive or negative?
Negative
For all nonzero numbers a, a to the zeroth power is:
1
Zero to the zeroeth power is:
Undefined
The square root of a times the square root of b equals:
The square root of a times b.
The square root of a divided by the square root of b equals:
The square root of a over b.
x to the -a equals:
1/x to the a
x^a * x^b equals:
x^(a+b)
(x^a)/(x^b) equals:
x^(a-b) and 1/(x^b-a)
x^a * y^a equals:
(xy)^a
(x/y)^a equals:
(x^a)/(x^a)
(x^a)^b equals:
x^ab
The equation for calculating simple interest:
V = P (1 + (rt)/100)
The equation for calculating compound interest compounded annually:
V = P(1+(rt)/100)^t
The equation for calculating compound interest compounded n times a year:
V = P(1+(rt)/100n)^nt
If a polygon has n sides, the sum of its angles equals:
(n-2)(180)
The area of a trapezoid is:
A = (1/2)(B1+B2)(h)
What is the circumference of a circle?
2[pi]r
What is the area of a circle?
[pi]r^2
What is the volume of a cylinder?
V = [pi]r^2h
What is the area of a cylinder?
A = 2([pi]r^2) + 2[pi]rh
